/usr/include/deal.II/dofs/dof_handler_policy.h is in libdeal.ii-dev 8.4.2-2+b1.
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//
// Copyright (C) 1998 - 2016 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, redistribute
// it, and/or modify it under the terms of the GNU Lesser General
// Public License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------
#ifndef dealii__dof_handler_policy_h
#define dealii__dof_handler_policy_h
#include <deal.II/base/config.h>
#include <deal.II/base/exceptions.h>
#include <deal.II/base/template_constraints.h>
#include <deal.II/dofs/dof_tools.h>
#include <deal.II/dofs/dof_renumbering.h>
#include <vector>
#include <map>
#include <set>
DEAL_II_NAMESPACE_OPEN
template <int, int> class FiniteElement;
template <int, int> class DoFHandler;
namespace internal
{
namespace DoFHandler
{
struct NumberCache;
/**
* A namespace in which we define classes that describe how to distribute
* and renumber degrees of freedom.
*/
namespace Policy
{
struct Implementation;
/**
* A class that implements policies for how the
* DoFHandler::distribute_dofs and DoFHandler::renumber_dofs functions
* should work.
*/
template <int dim, int spacedim>
class PolicyBase
{
public:
/**
* Destructor.
*/
virtual ~PolicyBase ();
/**
* Distribute degrees of freedom on the object given as first
* argument. The reference to the NumberCache of the DoFHandler object
* has to be passed in a second argument. It could then be modified to
* make DoFHandler related functions work properly when called within
* the policies classes. The updated NumberCache is written to that
* argument.
*/
virtual
void
distribute_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const = 0;
/**
* Distribute the multigrid dofs on each level
*/
virtual
void
distribute_mg_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
std::vector<NumberCache> &number_caches) const = 0;
/**
* Renumber degrees of freedom as specified by the first argument. The
* reference to the NumberCache of the DoFHandler object has to be
* passed in a second argument. It could then be modified to make
* DoFHandler related functions work properly when called within the
* policies classes. The updated NumberCache is written to that
* argument.
*/
virtual
void
renumber_dofs (const std::vector<types::global_dof_index> &new_numbers,
dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const = 0;
};
/**
* This class implements the default policy for sequential operations,
* i.e. for the case where all cells get degrees of freedom.
*/
template <int dim, int spacedim>
class Sequential : public PolicyBase<dim,spacedim>
{
public:
/**
* Distribute degrees of freedom on the object given as last argument.
*/
virtual
void
distribute_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const;
/**
* Distribute multigrid DoFs.
*/
virtual
void
distribute_mg_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
std::vector<NumberCache> &number_caches) const;
/**
* Renumber degrees of freedom as specified by the first argument.
*/
virtual
void
renumber_dofs (const std::vector<types::global_dof_index> &new_numbers,
dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const;
};
/**
* This class implements the policy for operations when we use a
* parallel::shared::Triangulation object.
*/
template <int dim, int spacedim>
class ParallelShared : public Sequential<dim,spacedim>
{
public:
/**
* Distribute degrees of freedom on the object given as first
* argument.
*
* On distribution, DoFs are renumbered subdomain-wise and
* number_cache.n_locally_owned_dofs_per_processor[i] and
* number_cache.locally_owned_dofs are updated consistently.
*/
virtual
void
distribute_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const;
/**
* This function is not yet implemented.
*/
virtual
void
distribute_mg_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
std::vector<NumberCache> &number_caches) const;
/**
* Renumber degrees of freedom as specified by the first argument.
*
* The input argument @p new_numbers may either have as many entries
* as there are global degrees of freedom (i.e. dof_handler.n_dofs() )
* or dof_handler.locally_owned_dofs().n_elements(). Therefore it can
* be utilised with renumbering functions implemented for the
* parallel::distributed case.
*/
virtual
void
renumber_dofs (const std::vector<types::global_dof_index> &new_numbers,
dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const;
private:
};
/**
* This class implements the policy for operations when we use a
* parallel::distributed::Triangulation object.
*/
template <int dim, int spacedim>
class ParallelDistributed : public PolicyBase<dim,spacedim>
{
public:
/**
* Distribute degrees of freedom on the object given as last argument.
*/
virtual
void
distribute_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const;
/**
* Distribute multigrid DoFs.
*/
virtual
void
distribute_mg_dofs (dealii::DoFHandler<dim,spacedim> &dof_handler,
std::vector<NumberCache> &number_caches) const;
/**
* Renumber degrees of freedom as specified by the first argument.
*/
virtual
void
renumber_dofs (const std::vector<types::global_dof_index> &new_numbers,
dealii::DoFHandler<dim,spacedim> &dof_handler,
NumberCache &number_cache) const;
};
}
}
}
DEAL_II_NAMESPACE_CLOSE
/*---------------------------- dof_handler_policy.h ---------------------------*/
#endif
/*---------------------------- dof_handler_policy.h ---------------------------*/
|